A simulated and manufactured broadband antenna array of 2×2 meta-elements operating in the range of 2.5–4.5 GHz is presented. The characteristic size of the aperture of this sample is two wavelengths, but its realized gain exceeds 11.3 dBi in the entire range and reaches a peak of 14.3 dBi at the frequency of 3.2 GHz. Such results become possible by the successful combining electric and magnetic multipoles of the meta-elements, slightly spaced in frequency. As a trade off in accuracy and manufactring costs we use additive manufacturing: 3D printing of meta-elements on a photopolymer printer and subsequent metallization of their surface were involved in the manufacture of the antenna array.

中文翻译：

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利用印刷元元件实现宽带天线阵列及其多极谱

提出了一个模拟和制造的 2×2 元元件宽带天线阵列，工作频率范围为 2.5–4.5 GHz。该样品的孔径特征尺寸为两个波长，但其实现的增益在整个范围内超过11.3 dBi，并在3.2 GHz频率处达到14.3 dBi的峰值。通过成功地组合元元件的电和磁多极（频率略有间隔），这样的结果成为可能。作为精度和制造成本的权衡，我们使用增材制造：天线阵列的制造涉及在光聚合物打印机上对元元件进行 3D 打印以及随后对其表面进行金属化。